The diameter of a circular placemat is 42 centimeters. What is the approximate area of the circular placemat?

Need same math paper but the back now i hope your able to read it cleary i need with hw

Neal buys a board game. he pays for the board game and pays $1.54 in sales tax. the sales tax rate is 5.5%. what is the original price of the board game, before tax

Amap has a scale of 3.5 inches = 20 kilometers. if the distance between two cities on the map is 4.9 inches, what is the actual distance between the two cities?